FIT HUB is an application for a gym that specializes in all topics related to health and fitness, and it offers specialized training programs to achieve the personal trainee's goal. By registering on the app and adding their name, date of birth, and address, users receive their unique barcode, which allows them to start selecting their subscription type, start and end dates, as well as whether they want a personal trainer or a specialized diet plan. The training plan is explained through explanatory means that help the client understand what they will be doing, avoid mistakes, and familiarize them with the rules and system of the facility. All entered data is stored in the member's profile, and the next time they log in, the system will automatically open their profile, which contains all membership details. The system connects members with their trainers and sends schedule changes or plan changes. Clients can also change or cancel their session appointment at any time through the app, as long as it is at least one day before the session. If a client wants to change their personal trainer, they must complete the current training program first, and then they can change the trainer. The client is allowed to upgrade their membership type at any time, and in that case, they will have a new training program, and they can change their trainer even if their current training program is not yet completed. The client can access the store that offers sports clothing, equipment, and all exercise supplies. Cash only is available at the gym for subscriptions and the store.